Automatically controlled multiple valve for steam lines



May 28, 1935- c. E. ARMSTRONG V2,002,761

AUTOMATICALLY CONTROLLED MULTIPLE VALVE FOR STEAM LINES May 2s, 1935. yC, E. ARMsTRoN 2,oo2,761

, AUTOMATICALLY CONTROLLED MLTIPLE VALVE FR STEAM LINES Filed Jugo 21,'1933 2 Sheets-Shect 2 will i f wn .e J 4 v f www ff i f /Z H i g l lwwf? 1L I A l I l E- W H W 3 f Z A "m 20 j JZ 1 1f@ J, 55 5 I E 2q' y IZ6 wl Z u l N n I 5 Z4 27 Z7 'H nlll'i'lnl ull'flmh nlfm" IHHWHI i [l 41 A Char/es E/rmtmnq JZ 27 l g2 Inventor t menten Mey 2s, 193s.2,002,761

UNITED sTaTEs rATENr ottici?.A

AUToMATIeAnL 1 1'1ii'tomni) MULTIPLE VALKEFQ .STEAM LINES charles n.Armste, comme, oreg., 'assigner to Armstrong Heat Control Corporation,Corvallis, Oreg., a. corporation of Oregon Application 21, 1933, SerialNo. 676,884

3 Claims. (C1. 137-145) This invention relates to my United Statespatamount of lsteam that passes through the device. ent applicationsfiled concurrently herewith as A further object ofmy present inventionconiollows: sists in providing a. device having a plurality of Automatictime controlling devices Serial No. ported-valves disposed therein inwhich the orice 5 676,886, filed June 21, 1923; Improvement in of thevalve may be changed from time to time. 5

thermostat controls Serial No. 676,882, filed June A further object ofmy invention consists in 21, 1933; and Improvements in electromechanicalproviding a device that may be regulated and timers Serial No. 676,885,filed June 21, 1933. controlled from a remote controlling station.

Myinvention is intended for use where a uni- A further object of myinvention consists in form temperature is to be maintained within aproviding a device having flanged connections 10 building and especiallywhere steam isbeing used disposed upon its oppositely disposed ends andas the heat supplying medium. having a common center line in order thatthe This present invention is 'comprised of a base ilanged connectionsmay be directly attached to having su'per'posed thereupon a body elementand a steam line already placed in position.

a steam chest. The base is longer than the body A still further objectof my invention consists l5 element and the steam chest and outwardlyexin-so constructing the device that it may be made tends therefrom atone end. A cam shaft exto actuate valves into open or closed position.tends longitudinally of the body element and is Either or any one of thevalves may be actuated Journaled relative thereto. `in either directionas is required and from a A prime mover and speed reducers rest uponremote control Station that Will predetermine the 20 the outer end ofthe base and the same coacts amount of steam to be passed through thedevice. together to drive the cam shaft at a greatly re- My inventionCODSiStS in S0 COIiStruCting the duced speed. A plurality of spaced camsare device that it-may be comprised of a minimum disposed npon'the camshaft., A valve lifter is number of parts and one that will be free fromassociated with each of the cams and is actuated mechanical Operatingannoyances. l 25 thereby. A contact bar is superposed-over each And astill further object of my invention conof the valve litters and thesame coats with and sists in so constructing and esemblilg the deliftsthe valve stem. A reacting element removvice that it maybe Placed in eSteam line. With ably secured to the free end of the contact bar aminimum of mechanical effort and prepara* maintains contact between thevalve lifter and $1011- 30 the valve stem. With these and incidentalobjects in view, the

The steamchest is partitioned by a diaphragm invention consists incertain novel features of and a plurality of valves and valve seats aredisconstruction and combination of parts, the esposed within thediaphragm and the valves are sential elements of which are s et forth inthe ap- 85 in regista-able alignment with the cams and are pendedclaims, and a preferred form of embodi- 35 adapted for being actuatedindirectly4 by the cams. ment Of Which is'hereinfter Shown with refer-An inlet port is disposed at one end of the ence to the drawings whichaccompany and form chest and communicates with the interior of the apart of this specification. chest and at one side of the diaphragm andan In the drawings:

40 outlet port is dispsed at the-opposite end of ,FlgQl 1s a side vieworthe assembIed device. 40,

the steam chest and communicates with the in- Fm 21s an end view ofltheassembled dev1ce. rmr 0f the che. and at' the Opposite Side 0f Fig. 3 isa fragmentary sectional side view of the diaphragm. -Fianged connectionsare disthe putting diaphragm u'pon which the'mmti; posed upon theoutsidev 1f thechest and at each le valves ne seted In this View isShown one of the ports.y The ilanged connections have a p i Y- of lthevalves with an orice changing ring discommon center line.Acapisremovably secured os d therein for smtabl determmm the Size'tothetopside ofthechest. l p e l y g' The primary object of myinvention is to proof the mening thmugh which the operating uid d i4 f tt e P35595- v 5o ggg; psvsiag gerrlhrzuim? con rolling th Fig.v 4 is atop plan view of the valve bushing 5o A further object of my inventionconsists in and 0f the Orm controlling m13 thereproviding a device, whenused in conjunction in. .j; Y with the other inventions led'concurrently Fig. 5 is a perspective plan view of the orice herewithfor regulating the temperature in a controlling ring shown removed vfromthe bush- 5 building by regulating ena predetermimng the ing.

Fig. s is a sectional side view of the body or the multiple valve.

Fig. 7 is a sectional end view of the multiple valve.

Fig. 8 is diagrammatic and shows-a fragmen-` tary sectional'side view ofthe diaphragm and a perspective end view of the cam shaft and cams andillustrates the manner in which the shape of the cams tends to hold theopened valves open while the others are being opened consecutively andhow they are closed consecutively.

Like reference charactersrefer tolike parts throughout th`e severalviews.

a port 5 conducts the live steam into the steam chest compartment 6. Aange I is disposed at the oppositely disposed end of the chestand issecured to the chest Ak port 8 conducts the steam from the steam chestto a distributing pipe line secured to the flange 1. The ports 5 and 8are coaxial with each other to facilitate the placing of the devicewithin-a steam line. It is particularly advantageous to have thesecenter-lines coaxial where the device is to be placed in a steam linethat is already in place and erected.

A diaphragm 3 is disposed within the steam chest and partitions thechest into an inlet chamber and an outlet chamber with the port 5directly communicating with the inlet chamber the port 8 communicatingwith the exhaust chamber.

A plurality of ports are.disposd within the diaphragm. The ports arepreferably of different diameters and are spaced apart and the samepreferably have a common center line. A cap I8 is removably secured tothe top lof the chest and is secured thereto by the usual fasteningmeans, as

Y engine bolts. A gasket I I ,is disposed between the cap andythe top ofthe chest. Each of the valves 1s made substantially as illustrated inFig. 3 in lwhich a vvalve bushing I 2 is placed within the dia- Dhlagm.An annular fIange I3 outwardly extends from the upper periphery of thebushing and theY under side of the flange rests upon a shoulder I4 thatis formed integral with the dia- Dhragm. An annular ledge I5 inwardlyextends from the base of the bushing and the same acts as a support foran orice controlling ring I6 that is removably disposed thereupon. Avalve seat I'I 1s disposed upon the inner upperv surface of the bushingand the slope atthe valve seat is made to best meet the requirements ofthe steam pressure upon which the same is to operate.

Valve stem guides I8 are disposed in registry ,alignment with the portopenings disposed within .fthe diaphragm and the same are machined toprecisely flt the base I3 of the steam chest casting. These bushings aremade relatively long in order that a precise alignment may be maintainedupon the valve stem. 28. The valve stem 20 has a valve head 2I disposed,upon its upper end and the same is fashioned 'to the slope of the valveseatII upon its under surface as illustrated at 22. A stuiiing gland 23is disposed upon the under side of the valve guide I8` and the samemaintains a steam ofthe valves and valve stems and coacts with the valvestems for actuating the same. A valve lifter 28 is hingedly secured tothe body element by a journal shaft 23 that runs longitudinally of theoutside wall of the body element and is journaled within any suitablejournal bearing 30.. A cam` roller 3l is journaledwithin-the free end ofthe valve lifter 28, and it rests directly upon the outer surface 32 ofthe cam. The free end of the valve stem engages the convex surface 32aof the cam lifter and rests directly upon the outer surface 32 of thecam. The purpose of the convex surface of the cam lifter is to provide afree and easy movement between the valve stem and lifter due to radiusaction.

A contactor bar 33y is hinged about a. journal pin 34 and a pin 35 isdisposed within the valve stem for raising and lowering the valve. 'Ihecontacter bar terminates upon its free, end in a spring receiving hook31 and a reacting element, as a coil spring 38 is secured upon its oneend to the hook 31 and is secured upon its oppositely disposed end to ascrew eye 33. Ihe purpose of the contactor bar 33 and the spring 38 isto keep the valve stem in contact with the valve lifter 28 and the cam2l, thereby seating the valve.

A link 38 allows the perpendicular movement of the valve pin 35 so thatthe valve stem will remain in alignment.

A prime mover, as an electric motor 40 rests directly upon the base 2and a speed reducer 4I is associated with the armature shaft ofthe primemover. In order to further reduce the speed-of the prime mover, a secondspeed reducer 42 is driven from the shaft of the speed reducer 4 I Aclutch 43 connects the driven shaft of the speed reducer 42 with the camshaft 24. Each energization of the prime mover rotates the cam shaft forone cycle of operation which cycle is to open or close one of thevalves. -f

' I have here shown four valves as beingdisposed within the deviceandfourcams disposed upon the common cam shaft. The cams are so arrangedthat all of the valves may be .completely open at one time or all of thevalves completely closed at one time, or'so that one or more of thevalves may be completely opened or one or more of the valves becompletely closed at each actuation of the same by the prime mover. I donot wish, however, to be limited to four valves only, asa greater orlesser number may be required upon different classes of devices.

Condensation occurs in devices of. this kind an it is highly desirablelthat the condensate be not retained withinthe device itself. Toeliminate the condensate that develops within the device, I provide athermalrelease valve 44 and pipe the same to the respective chambers.

'While the form of. mechanism herein shown and described is admirablyadapted to fulfill the objects primarily stated, it is to be understoodthat it is not intended toconne the invention to the embodiment hereinshown and described,

A as it is susceptible of embodiment in various forms, vall comingwithin the scope of the claims which follow.

What I claim is: l. In a device of the class described, the combinationof a base, a mechanism supporting frame superposed on the base, a steamchest super'- posed on the frame, a diaphragm disposed within the chest,valves disposed inthe diaphragm, the stems extending downwardlytherefrom, a cam shaft journaled relative to the frame and extend-l inglongitudinally thereof, a prime mover disposed upon the base, a speedreducer interposed between the prime mover and the cam shaft and adaptedfor driving the cam shaft at a reduced speed, a plurality of cams spacedapart and disposed uponthe cam shaft, a valve lifter hinged relative tothe frame, the valve lifter being adapted for riding the camming surfaceof the cam, and engaging the lower end of the valve stem for coactingwith the depending valve stem to operate the valve, a floating linkagemember linked to the body element and pivotally secured to the valvestem and provided at its free end with spring anchorage means and areactance member secured at its one end to the free end of the floatinglinkage member and at its other end to the frame.

2. In a device of the class described, the combination of a base, amechanism supporting frame, a steam chest, valves within the steamchest, a cam shaft having spaced cams disposed thereupon extendinglongitudinally of the frame and journaled relative thereto, power meansfor driving the cam shaft, a valve lifter hingedlymounted relative tothe body element and adapted for riding the cam, a valve stem, a pincarried speed reducer mounted upon the base, a mechanism supportingframe, a chest. a cam shaft disposed longltudinally of the body elementand journaled lrelative thereto and adapted for being driven by theprime moverthrough the speed reducer, a plurality of cams spaced apartand mounted upon the cam shaft, a plurality of valves disposed withinthe chest and in registry with the cams of the cam shaft and adapted forbeing actuated thereby, a valve lifter disposed between the cam and thevalve stem, a contactor bar hinged to the body element and coacting withthe valve stem, and means. for normally maintaining the` contacter bar,the valve stem and the valve lifter. repressed.

CHARLES ARMSTRONG.

